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Service & Maintenance
Mixing of Oil Types
Caution:
Never mix engine oils & gear oils in the same transmission.
Engine oils and gear oils may not be compatible; mixing can cause breakdown
of the lubricant and affect component performance. When switching between
types of lubricants, all areas of each affected component must be thoroughly
flushed.
Note:
For a list of Eaton Approved Synthetic Lubricants, see TCMT0021 or call
1-800-826-HELP (4357).
Note:
Additives and friction modifiers must not be introduced.
Proper Transmission Lubrication Level
Make sure the transmission lubricant is level with the bottom of the fill open-
ing. Being able to reach the lubricant with your finger does not mean the lubri-
cant is at the proper level.
If the transmission operating angle is more than 12°, improper lubrication can
occur. The operating angle is the transmission mounting angle in the chassis
plus the grade (expressed in degrees).
Any time the transmission operating angle of 12° is exceeded for an extended
period of time, the transmission must be equipped with an oil pump or cooler
kit to insure proper lubrication.
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